connect(window, 'onload', function() {
	forEach(getElementsByTagAndClassName('DIV', 'xc'), function(block) {
		connect(getFirstElementByTagAndClassName('DIV', 'block-title', block),
				'onclick', function(e) {
					text = getFirstElementByTagAndClassName('DIV',
							'block-text', block);
					if (hasElementClass(block, 'expanded')) {
						removeElementClass(block, 'expanded');
					} else {
						addElementClass(block, 'expanded');
					}
				});
	});
});